Metallic spool.



G. A. HERSEY.

METALLIC SPOOL.

APPLICATION HLED1UNE18,19I3.

Patented June 15, 1915.

WITNESSES INVENTOR J, A J 5 m ATTORNEYS THE NORRIS PETERS G67, PHo'rc-LITHQ. WASHING TON. o, c.

' 7 being GUY A. HERSEY, 0F BANGOR, MAINE.

METALLIC SPOOL.

To all whom it may concern:

Be it known that I, GUY A. HERSEY, a citizen of the United States, and a resident of Bangor, in the county of Penobscot and State of Maine, have invented a new and Improved Metallic Spool, of which the following is a full, clear, and exact description. The invention relates to spools for containing sewing thread, yarns and the like, and its object is to provide a new and improved metallic spool which is simple in construction, cheap to manufacture and exceedingly light, yet strong and durable to allow repeated use of the spool.

In order to accomplish the desired result, use is made of an outer metallic shell and an inner metallic shell forming a reinforcing lining for the outer shell, each shell having a cylindrical body and tongues flaring outwardly and extending integrally from each end of a bodytoform a conical spool flange at each end of'the spool, the tongues at the end of one shell being arranged in staggered relation to the tongues at the corresponding end of the other shell, each shell formed from a sheet metal blank bent into cylindrical form With'the edges of the body abutting and with the abutting edges of the shell bodies breaking joint. Use is also made of caps closing the ends'of the shell, each cap having a crimping flange and the tongues, at each end of the spool having crimping flanges arranged in a circle and interlocked with the crimping flange of the corresponding cap.

A practical embodiment of the invention is represented in'the accompanying drawings forming a part of this specificatiomin which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the metallic spool with part in section and part of the paper covering broken out; Fig. 2 is a sectional plan view of the same on the line 2-2 of Fig. 1; Fig. 3 is a side elevation of one end of the assembled shells; Fig. 4: is a perspective view of the same and prior to crimping the flanges at the ends of the tongues; Fig. 5 is a face view of the blank for forming the outer shell; Fig. 6 is a sectional perspective view of a portion of the same; and Fig. 7 is an enlarged sectional side elevation of a portion of the cap and the crimping flange.

The metallic spool consists essentially of an outer shell A, an inner shell B and caps C 1 Specification of Letters Patent.

Application filed June 18, 1913. Serial No. 774,361.

closing the ends of the shells. The shells A and B are formed from sheet metal blanks such as shown in Fig. 5, each blank being provlded at the ends with parallel slits forming tongues A, B each terminating in a reduced crimping flange A or B The blanks are bent into cylindrical shape with the edges of the blanks abutting, and when the shells are assembled the tongues A and B are in staggered relation with each other and the abutting edges break joint, as plainly indicated at A and B in Fig. 2. In order to'retain the shells A and B with the abutting edges of the shells breaking oints and the tongues A and B in staggered relation during the bending operation, use is made of struck-up lugs A in the body of the shell A and bent inwardly to extend between the abutting edges of the inner shell B so that the joints A and B are held inspaced relation one relatively to the other. It is understood that the cylindrical body of the inner shell B fits snugly against the inner surface of the cylindrical body of the outer shell A, and the two assembled shells are subjected at each end to the action of a die press to swage the tongues A and B outwardly, as plainly indicated in Figs. 3 and 4, to form conical or flaring spool flanges or rims at theends of the cylindrical bodies. The crimped flanges A B are reduced in width relative to the width of the tongues A, B ,to" permit of swaging the said flanges into the form of a circle. Each cap Cis provided with an annular flangeC adapted to fit against the inner faces of the tongues B, the shoulder terminating in a crimping flange C adapted to engage the crimping flanges A B and to be crimped with the same outwardly by a suitable beading die-press, so that the parts are rigidly fastened together and securely held in position. Each of the caps C is provided with a central aperture C for the passage of the supporting spindle for the spool when the latter is used. After the shells are assembled and fastened together as described the conical spool flanges at the ends of the cylindrical bodies are covered with a paper filling D to render the outer surfaces of the said-spool flanges as smooth as possible, and then the cylindrical exterior surface of the cylindrical body of the outer shell A as well as the said paper filling D are covered by a paper covering E so as to protect the thread from coming in contact with the metal of 7 of one shell being arranged the spool. It is understood that by the arrangement described the tongue of one shell covers the space between adjacent tongues of the other shell to provide a continuous conical spool flange at each end of the spool. A

metallic spool constructed in the manner described is exceedingly strong and durable yet comparatively light, and the spool can be cheaply manufactured.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A metallic spool, comprising an outer metallic shell and an inner metallic shell forming a reinforcing lining for the outer shell, each shell having a cylindrical body and rectangular tongues flaring outward from each end thereof, the tongues of the shells being in staggered relation to each other and having shoulders on opposite sides adjacent to their ends, forming reduced crimping flanges, the flange ofone shell extending between two adjacent flanges of the other shell, and a cap for each end of the spool and provided with crimping flanges interlocking with the flanges of the said tongues.

2. A metallic spool, comprising an outer metallic shell and an inner metallic shell forming a reinforcing lining for the outer shell, each shell having a cylindrical body, rectangular tongues flaring outwardly and extending-integrally from each end of a body to form a conical spool flange, the adjacent edges of the shells breaking joints with each other and the tongues at the end in staggered relation to the tongues at the corresponding end of the other shell and overlying one another throughout their length, the said tongues at each end of the spool being reduced at their free ends to form crimping flanges lying adjacent to each other and arranged in a circle, and a cap for each end of the spool and provided with an annular outwardly extending flaring flange fitting against the inner faces of the tongues, the flange terminating in a crimping flange 'interlocking with the crimping flanges of the tongues.

3. A metallic spool, comprising an outer metallic shell and an inner metallic shell forming a reinforcing lining for the outer shell, each shell having a cylindrical body, tongues flaring outwardly and extending integrally from each end of a body to form a conical spool flange, the tongues at the end of one shell being arranged in staggered re lation to the tongues at the corresponding end of the other shell, each shell being formed from a sheet metal blank bent until the edges of thebody abut, the abutting edges of the shell bodies breaking joint,

and struck-up lugs on the outer shell body and extending inwardly between the abutting edges of the inner shell body to hold the shell bodies in joint-breaking relation with each other.

4;. A metallic spool, comprisingtwo metallic cylindrical shells, each shell, being provided with outwardly flaring rectangular tongues having adjacent to their ends shoulders formingreduced crimping. flanges, the shells being arranged one within the other with their adjacent edges breaking joints and the tongues being in staggered relation to each other, means for securing the bodies of the shells togethenanda cap provided with a crimping flange interlocking withthe crimping flanges of the said tongues.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses GUY A. HERSEY.

Witnesses:

FREDERI'O W'. ADAMS, FRED E. DECK-ER.

Copies or this patent may be obtained for five cents each, by addressing the Commissioner of ream, I Washington, D. G. 

